149 
General color bluish-black, the vertex, postorbital region, mesoscutum, 
lateral and apical margin of scutellum either metallic green or with a 
strong greenish luster; basal tergite of abdomen metallic greenish with 
a brassy and purple luster, the venter usually with a more or less evident 
brassy luster; other parts of the body with a purple luster, which is 
sometimes brilliant especially on the cheeks and posterior half of the 
mesopleura, but the axillae and. scutellum considerably duller than the 
rest of the thorax; antennae and legs dark fuscous, the scape and femora 
nearly black, the apex of front and hind tibiae and corresponding tarsi 
somewhat brownish, the apical fourth of middle tibiae and the middle 
tarsi brownish yellow, middle trochanters and a narrow annulus near the 
base of the middle femora pale yellowish; wings with a small fuscous 
cioud at extreme base, and a transverse cloud beneath marginal vein 
extending to the opposite margin, medially produced towards the apex 
where it expands in the middle of the apical half of the disc, and gradu- 
ally disappears towards the margins; the cloud being delimited by a clear 
area at the end of the stigmal vein and by another on the opposite side 
of the dise, the latter area somewhat fusiform in shape, extending parallel 
with the margin and basally produced into the transverse cloud beneath 
the marginal vein. 
Length of body, (1.06 to 1.37) 1.83; length of head, 0.462; width of 
head, 0.487; thickness of head, 0.287; width of vertex at anterior ocellus, 
0.120; width of mesoscutum, 0.478; length of forewing, 1.18; width of 
forewing, 0.407 mm. 
Male. Head much thinner fronto-occipitally than in the female, the 
occiput more deeply concave; as seen from the side it is thickest above 
the middle, the facial outline meeting the plane of the frontovertex in 
an angle of somewhat more than 90 degrees; eyes much smaller, some- 
what less broadly oval but otherwise about as in the female; frontovertex 
about a fourth longer than wide, the ocelli arranged in a nearly equi- 

Fig. 10. Hypergonatopus hawaiiensis. Antenna of male. 
lateral triangle, the anterior ocellus placed a little in front of the middle 
of the frontovertex; the posterior pair about one-half of their own 
diameter from the. eye-margin, and nearly twice as far from the occipital 
margin; cheeks nearly twice as long as wide and nearly as long as the 
eyes; scrobal impression of face subcircular, somewhat longer than wide, 
reaching upward between the eyes, and divided in its lower two-thirds by 
the longitudinal low prominence between the antennal sockets. Antennae 
inserted just below the line connecting the anterior corners of the eyes, 
